1. Hospital Clínic de Barcelona, IDIBAPS, CIBERehd, Barcelona, Spain
2. Department of Gastroenterology, University Hospitals Leuven, Leuven, Belgium
3. Centre for Immunobiology, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
4. Dr Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
5. Pfizer Inc, Collegeville, PA, USA
6. Optum, Lincoln, RI, USA
7. Pfizer Inc, Groton, CT, USA
8. The University of Chicago Medicine, Inflammatory Bowel Disease Center, Chicago, IL, USA